Grinding-machine



(No Model.)

I. N. SMITH.v GRINDING MACHINE.-

No. 281,151. Patented July 10, 1883.

UNITED STATES ISAAC N. SMITH, OF ASHLEY, ILLINOIS.

GRINDING- SPEGIFIG ATION forming To ctZZ whom it may concern:

Be it known that 1, Isaac N. SMITH, of Ashley, in the county ofvl'l'ashington and State of Illinois, have invented certain new anduseful Improvements in Grinding-Machines; and I do hereby declare thatthe following is a full, clear, and exact-description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,which form a part of this specification, and in which Figure 1 is aperspective view of my improved grindingqnachine. Fig. 2 is a sideelevation of the same, and Fig. 3 is a front view.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has relation to machines for grinding and polishing toolsof any kind; and

it consists in the improved construction of the same, which will behereinafter more fully described and claimed.

. In the accompanying drawings, A A are the I side pieces of the frontframe, upon the cross bar 13, in the lower part of which is pivoted atreadle, G, the inner end of which is connected to the pitin an D. Theupper end of this connects with the wrist-pin E of a gearwheel, F, whichmeshes with the pinion G of a shaft, H, upon which the grindstone orpolishing-wheel shown at I is affixed.

To the back part of frame A is hinged the supporting-frame K, which,when the machine is in use, is held in its extended position by means ofhooks L, engaging staples M on the sides of frame A. When the machine isnot in use, the snpporting'frame K may be laid up against the frontframe,A, as indicated in dotted lines in Fig. 2, when the machine willoccupy but very little room.

Fastened removably and adjustably upon the pitman D, by setsorews 0 orany other suitable means, is a box or reservoir, N, adapted to containwater, oil, or polishing- MACHINE.

part of Letters Patent No. 281,151, dated July 10, 1883. Applicationfiled May 28, 1883. (No model.)

powder, as the case may be, according to the nature of the work to bedone on the machine. This box or reservoir is so adjusted upon thepitman that at each upstroke of the latter the rim of the grindstonewill dip in its contents, while on the downstroke it will be re movedtherefrom. Thus it will be seen that the grindstone is dipped in thewater or oil once at each revolution, and no more, whereby I preventexcess of fluid on the stone, the water or oil which it carries with itat each dipping dropping back again into the reservoir as this iswithdrawn from the stone on the downstroke of the pitinan. In otherwords, I feed the water or oil to the stone in the exact proportionneeded to accomplish the most satisfactory results without any extralabor or mechanism Having thus described my invention, 1 claim anddesire to secure by Letters Patent of the United States- 1. In agrinding or polishing machine, the combination, with the grindstone orpolishingwheel, of a receptacle adapted to contain wa ter, oil, or otherfluids, or material, in a powdered state, secured adjustably andreinovably upon the pitman which operates the stone or wheel,substantially in the manner and for the purpose shown and set forth.

2. The combintion of the frame A, hinged supporting-frame K, grindstoneor polishing wheel I, fixed upon shaft H, having pinion G, drive-wheelF, having wrist-pin E, pitman D, removable and adjustable receptacle N,and treadle 0, all constructed and combined to operate substantially inthe manner and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto afliXed my signature in presence of two witnesses.

ISAAC N. SMITH.

Witnesses:

T. B. Bnowlv, E. A. MnsLnR.

